[heap] Avoid the use of cells to point from code to new-space objects.

src/objects-inl.h

Index: src/objects-inl.h
diff --git a/src/objects-inl.h b/src/objects-inl.h
index cb787374c81378898ba0f13c204776fa6b719eae..f80f8df975bffe2ed86a3b05f60ce153208245f4 100644
--- a/src/objects-inl.h
+++ b/src/objects-inl.h
@@ -2475,9 +2475,8 @@ Object** ArrayList::Slot(int index) {
   return data_start() + kFirstIndex + index;
 }
 
-
-void ArrayList::Set(int index, Object* obj) {
-  FixedArray::cast(this)->set(kFirstIndex + index, obj);
+void ArrayList::Set(int index, Object* obj, WriteBarrierMode mode) {
+  FixedArray::cast(this)->set(kFirstIndex + index, obj, mode);
 }